Vitalik Buterin proposes options-based DeFi to replace collateralized debt positions and eliminate forced liquidations. The framework uses slow oracles to reduce manipulation risk. Implications for MakerDAO, Aave, and Synthetix.
Ethereum co-founder Vitalik Buterin published a research post on the Ethereum Research forum Monday titled “Building index-tracking assets on top of options instead of debt.” The proposal targets a structural weakness in decentralized finance: the reliance on collateralized debt positions (CDPs) and real-time oracles that trigger forced liquidations during market stress.
“What if we use options as the base of DeFi, instead of CDPs and liquidations?” Buterin asked in a post on X. “Instead of extreme price movements creating a sharp and global ‘you get liquidated’ effect, instead your position smoothly rebalances over time.”
The architectural shift addresses a problem that has cost DeFi users billions: real-time oracle vulnerability. Every CDP-based liquidation depends on a fast price feed reporting current asset prices accurately and instantly, with no margin for error and no dispute window. Buterin has been increasingly vocal about the fragility of this design. “Real-time oracles can only rely on a small number of automated actors watching live price feeds, and they leave no room for dispute resolution or slow verification,” he wrote. The April 2026 Polymarket weather sensor manipulation – in which a trader allegedly netted $34,000 by manipulating a Paris weather sensor with a hair dryer – was a concrete demonstration of how a single data source can be gamed.
Under today’s DeFi model, users typically borrow against crypto collateral to mint synthetic assets or stablecoins like DAI. If collateral value falls too quickly, smart contracts automatically liquidate positions, often triggering cascades of forced selling during market stress. Buterin’s proposed alternative would let users hold contracts linked to a price index (called T in the proposal, examples include USD/ETH or CPI-based measures), split into two parts labeled P and N that together always equal the original ETH deposited. As the index moves, the position rebalances dynamically without triggering a liquidation event.
An options-based architecture would let DeFi rely on slow oracles similar to those used by prediction markets, with time for dispute resolution and verification. “Slower oracles may reduce the need for protocols to act on price updates within seconds,” Buterin wrote, calling the design “options-based, slow-oracle-friendly DeFi.” The framework would also allow users to gain exposure to personalized baskets of value rather than single fiat currencies, a structural departure from the stablecoin model that has dominated DeFi for nearly a decade.
The Polymarket incident is not an isolated case. Oracle manipulation has been a recurring attack vector across DeFi. In 2023, a flash loan attack on the BNB Chain exploited a price feed lag to drain millions from a lending protocol. The common thread is that CDP-based systems require oracles to be both fast and accurate simultaneously – a combination that becomes harder to maintain as market volatility increases.
Buterin flagged limitations. Rebalancing slippage is a significant practical challenge: options-based positions tied to indices require periodic rebalancing, and every rebalance executes a trade. On the Ethereum mainnet, gas costs and slippage could erode gains, particularly for smaller positions. Users would also need to actively manage their exposure over time.
The proposal is explicitly an early-stage research thread rather than a deployment plan. It signals the next direction of Buterin’s “low-risk DeFi” thesis, which he first laid out in detail in a September 2025 blog post arguing that low-risk DeFi is essential to Ethereum’s economic backbone.
The table highlights the trade-offs. For small retail positions, the gas cost of periodic rebalancing on Ethereum mainnet could make the options-based approach uneconomical. Layer-2 solutions like Arbitrum or Optimism would reduce these costs, the added complexity may deter casual users.
The naive read is that Buterin is proposing a new DeFi primitive that could eventually replace CDPs. The better market read is more nuanced. Buterin is signaling that Ethereum’s economic security depends on reducing systemic risk from liquidation cascades. Every major DeFi crash – from Black Thursday in March 2020 to the May 2022 Terra collapse – has involved forced liquidations amplifying price moves.
Risk to watch: The proposal does not address the liquidity problem for options markets. CDP-based systems work because the liquidation mechanism guarantees a buyer (the protocol) at a known price. Options-based systems require a counterparty willing to take the other side of the trade. In a market crash, that counterparty may disappear.
Confirmation signals:
Weakening signals:
For traders building a DeFi watchlist, the immediate takeaway is not about deploying capital into a new protocol. It is about understanding that the CDP model has a structural vulnerability that the Ethereum co-founder is now publicly trying to solve. Any protocol that successfully implements a slow-oracle, options-based synthetic asset could capture significant market share from existing CDP systems – only if it solves the gas cost and liquidity problems first.
The Buterin proposal does not change the near-term outlook for DeFi tokens. It does define a catalyst path: if a major protocol moves from research to testnet, the thesis for CDP-based tokens weakens and the thesis for options-based primitives strengthens.
For now, the proposal remains a research post. In a market where a single oracle manipulation can drain millions, the direction of Buterin’s thinking matters more than most protocol announcements. The question is whether the DeFi ecosystem is willing to trade the simplicity of CDPs for the complexity of options – and whether the gas cost math works at scale.
This article is based on Vitalik Buterin’s Ethereum Research forum post and related X posts. For more on Ethereum’s evolving DeFi architecture, see our crypto market analysis and Ethereum (ETH) profile.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.